Home / 26,405.91-39,612.15-8,638.38

Finding the Fourth Proportional to 26,405.91, 39,612.15 and 8,638.38

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Solution

The fourth proportional to 26,405.91, 39,612.15 and 8,638.38 is: 12,958.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,405.91 : 39,612.15 = 8,638.38 : x
  2. Step 2: Convert to fraction form
    26,405.91/39,612.15 = 8,638.38/x
  3. Step 3: Cross multiply
    26,405.91x = 39,612.15 × 8,638.38
  4. Step 4: Simplify right side
    26,405.91x = 342,184,804.32
  5. Step 5: Solve for x
    x = 342,184,804.32/26,405.91
  6. Step 6: Final answer
    x = 12,958.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.